动态第500页 - 绿手指 - 养花技巧、花生病了怎么办、花园打理和设计

2017年09月29日

Scientific Name Helianthus angustifolius L. [图片]Common Names Swamp Sunflower, Narrowleaf Sunflower Synonyms Helianthus angustifolius subsp. angustifolius, Helianthus angustifolius var. angustifolius, Coreopsis angustifolia, Discomela angustifolius Scientific Classification Family: Asteraceae Subfamily: Asteroideae Tribe: Heliantheae Genus: Helianthus [图片]Flower Color: Yellow Bloom Time: Early autumn Description Helianthus angustifolius is a perennial herb sometimes as much as 5 feet (1.5 m) tall. Leaves are long and narrow, up to 6 inches (15 cm) long. It is often cultivated for its bright, showy yellow flowers. One plant can produce 3 to 16 flower heads, each with 10 to 20 ray florets surrounding as least 75 disc florets. [图片]How to Grow and Care If you decide to add Sunflowers to your garden, there are a few things you will want to keep in mind. First of all, they are called sunflowers for a reason. They need sun. Make sure that the location you choose for your Sunflowers gets full sun. Second, you do not need to worry about soil too much. They are not picky about the conditions of the soil, but they are plants. They will do better in better soil. Third, Sunflower seed shells do contain a substance that is toxic to grass. So, you will need to either harvest the Sunflower heads before the seeds begin to fall out or you will need to plant your Sunflowers in a location where you do not mind any nearby grass being killed. Fourth, keep in mind the height of the Sunflower variety you have chosen. A giant, twelve foot variety will end up acting very much like a small tree and may shade the surrounding flowers. Origin Native to the south-central and eastern United States, found in all the coastal states from Texas to Long Island, and inland as far as Missouri.

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2017年09月29日

Scientific Name Zantedeschia rehmannii Engl. [图片]Common Names Pink Calla Lily, Pink Calla, Pink Arum Lily, Pink Arum, Red Calla, Rosafarbene Calla (German), Skär Kalla (Swedish) Synonyms Richardia rehmannii, Zantedeschia stehmannii Scientific Classification Family: Araceae Subfamily: Aroideae Tribe: Zantedeschieae Genus: Zantedeschia [图片]Flower Color: Pink to dark maroon Bloom Time: Early summer to mid summer Description Zantedeschia rehmannii is small to medium plant, grows up to 15 inches (40 cm) tall and up to 12 inches (30 cm) wide. The leaves are green, unmarked, semi erect and not arrow shaped as in other species. The spathe is cylindrical, pink to dark maroon with paler margins. They flower early summer to mid summer. [图片]How to Grow and Care It is easy to grow Calla Lilies. These plants do not generally require too much attention. Proper planting and location are about the only important things to consider when growing Calla Lilies. Care of them requires that they be planted in loose, well-drained soil. They prefer to be located in full sun or partial shade in warmer climates. Plants are typically planted in the spring. However, wait until the threat of frost has passed and the soil has warmed sufficiently before planting. They should be planted rather deep, about 4 inches (10 cm) for greater results, and spaced approximately a foot apart. Once planted, the area should be watered well. Calla Lilies enjoy being kept moist and will also benefit from a monthly dose of fertilizer throughout the growing season. As with planting, there’s not too much required for the care of Calla Lilies other than keeping them watered and fertilized. An adequate layer of mulch around the plants will help keep the area moist and free of weeds. They require a dormant period once flowering has ceased. During this time, you should refrain from watering as much to allow the plant to die back. Origin Native to South Africa and Swaziland.

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2017年09月29日

Scientific Name Puya chilensis Molina [图片]Common Names Sheep-eating Plant, Chilean Puya Synonyms Pitcairnia chilensis, Pitcairnia coarctata, Pourretia coarctata, Puya coarctata, Puya gigantea, Puya quillotana, Puya suberosa Scientific Classification Family: Bromeliaceae Subfamily: Pitcairnioideae Genus: Puya [图片]Flower Color: Green or yellow Bloom Time: Late winter to early spring. Plant may take 20 years or more to flower Description Puya chilensis is an evergreen perennial with large, dense rosettes of grey-green, strap-like leaves edged with hooked spines. The green or yellow flowers are borne on spikes which resemble a medieval mace, and stand up to 6.6 feet (2 m) high. Spreading by offsets, it can colonize large areas over time. Growth is slow and plants may take 20 years or more to flower. The outer two-thirds of the leaf blade bears outward-pointing spines which may be an adaptation to prevent herbivores from reaching the center of the plant. Hardiness USDA hardiness zone 9a to 11b: from 20 °F (−6.7 °C) to 50 °F (+10 °C). [图片]How to Grow and Care You can get Blue Puya seed and start the plants yourself in a greenhouse. Puya are slow to germinate and require temperatures of at least 70 degrees Fahrenheit (21 degrees Celsius). Use a well-drained potting soil in a seed flat. Keep the seeds moderately moist until they sprout. Once you see seedlings, move the flat to a brightly lit area with protection from the harsh light of midday. Transplant the seedlings when they have formed a rosette. Plants can tolerate a crowded pot. In USDA zones 8 to 11, you can transplant rosettes to the garden but in other zones they will have to be moved indoors in winter. Up until the cold temperatures appear, Blue Puya makes a great patio specimen. Water Puya plants in the ground once per week in summer. Potted plants should be watered when the top couple of inches of soil have dried out. Water the plant only once per month in winter when the plant is dormant. Fertilize with a diluted succulent food or indoor plant food in spring. Remove spent foliage from the rosettes for best appearance. Origin Native to the arid hillsides of Chile.

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2017年09月29日

Scientific Name Puya berteroniana Mez [图片]Common Names Blue Puya, Turquoise Puya, Aqua Sapphire Tower Scientific Classification Family: Bromeliaceae Subfamily: Pitcairnioideae Genus: Puya [图片]Flower Color: Blue Bloom Time: October to November Description Puya berteroniana is a perennial plant with leaves in tight rosettes. The leaves are long, thin, bent, up to 40 inches (1 m) long, up to 1 inch (2.5 cm) wide, silvery-green in color and have hard spines on the edges. The aqua-blue or blue-green colored flowers are arranged like spikes. Flowers from October to November. [图片]How to Grow and Care You can get Blue Puya seed and start the plants yourself in a greenhouse. Puya are slow to germinate and require temperatures of at least 70 degrees Fahrenheit (21 degrees Celsius). Use a well-drained potting soil in a seed flat. Keep the seeds moderately moist until they sprout. Once you see seedlings, move the flat to a brightly lit area with protection from the harsh light of midday. Transplant the seedlings when they have formed a rosette. Plants can tolerate a crowded pot. In USDA zones 8 to 11, you can transplant rosettes to the garden but in other zones they will have to be moved indoors in winter. Up until the cold temperatures appear, Blue Puya makes a great patio specimen. Water Puya plants in the ground once per week in summer. Potted plants should be watered when the top couple of inches of soil have dried out. Water the plant only once per month in winter when the plant is dormant. Fertilize with a diluted succulent food or indoor plant food in spring. Remove spent foliage from the rosettes for best appearance. Origin Endemic to Chile.

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2017年09月29日

Scientific Name Punica protopunica Balf. f. [图片]Common Names Socotran Pomegranate, Pomegranate Tree Synonyms Socotria protopunica Scientific Classification Family: Lythraceae Genus: Punica [图片]Flower Color: Pink Bloom Time: December and January through to the summer Description Punica protopunica is a flowering shrub or small tree, often thorny, up to 15 feet (4.5 m) tall. It has reddish-brown bark when young, fading to grey as it ages and becomes less fruitful. Leaves are dark green, glossy and opposite, growing up to 1.2 inches (3 cm) long. Flowers and fruits from December and January through to the summer. It differs from the Pomegranate (Punica granatum) in having pink (not red), trumpet-shaped flowers and smaller, less sweet fruit. The fruit is globose, up to 1.2 inches (3 cm) in diameter and yellow-green or brownish red in color when they are ripe. Hardiness USDA hardiness zone 7a to 11b: from 0 °F (−17.8 °C) to 50 °F (+10 °C). [图片]How to Grow and Care The Pomegranate shrub is somewhat drought tolerant and also salt tolerant. It is perfect for the sunniest and warmest locations in the yard that might scorch other plants. Pomegranate flowers can be used along with other annuals, perennials, shrubs and trees that attract hummingbirds. The pomegranate is a popular choice for bonsai. The bark is a red-brown color, and branches may have spines. Pomegranate may be grown in part shade as necessary, but ideally should be placed somewhere with as much sun and warmth as possible. The Pomegranate is drought tolerant, though irrigation is needed for proper fruit production, per the California Rare Fruit Growers. Water every 2 to 4 weeks during the dry season when you are establishing new shrubs. The optimal areas for this fruit are USDA Hardiness Zones 7-10. It is thought to come from Iran initially. The Pomegranate does best in well-drained soil, though it is able to thrive in a wide variety of soils from acid loam to alkaline soil. Origin It is endemic to the island of Socotra (Yemen).

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2017年09月29日

Scientific Name Punica granatum L. [图片]Common Names Pomegranate Synonyms Punica nana Scientific Classification Family: Lythraceae Genus: Punica [图片]Flower Color: Bright red Bloom Time: July to August Description Punica granatum is a shrub or a small tree, up to 32.8 feet (10 m) tall. The leaves are opposite or sub-opposite, glossy, narrow oblong, entire, up to 2.8 inches (7 cm) long and 0.8 inch (2 cm) wide. The flowers are bright red, up to 1.2 inches (3 cm) in diameter, with four to five petals. The edible fruit is up to 4.7 inches (12 cm) in diameter with a rounded hexagonal shape, and has thick reddish skin. The number of seeds can vary from 200 to about 1400 seeds. [图片]How to Grow and Care The Pomegranate shrub is somewhat drought tolerant and also salt tolerant. It is perfect for the sunniest and warmest locations in the yard that might scorch other plants. Pomegranate flowers can be used along with other annuals, perennials, shrubs and trees that attract hummingbirds. The pomegranate is a popular choice for bonsai. The bark is a red-brown color, and branches may have spines. Pomegranate may be grown in part shade as necessary, but ideally should be placed somewhere with as much sun and warmth as possible. The Pomegranate is drought tolerant, though irrigation is needed for proper fruit production, per the California Rare Fruit Growers. Water every 2 to 4 weeks during the dry season when you are establishing new shrubs. The optimal areas for this fruit are USDA Hardiness Zones 7-10. It is thought to come from Iran initially. The Pomegranate does best in well-drained soil, though it is able to thrive in a wide variety of soils from acid loam to alkaline soil. Origin Native from Iran to the Himalayas in northern India.

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2017年09月29日

Scientific Name Psychotria elata (Sw.) Ham [图片]Common Names Hot Lips, Hot Lips Plants, Flower Lips, Hooker’s Lips, Mick Jagger’s Lips Synonyms Cephaelis elata (basionym), Callicocca elata, Cephaelis costaricensis, Cephaelis phoenicia, Cephaelis punicea, Evea elata, Palicourea elata, Tapogomea elata, Tapogomea punicea, Uragoga elata, Uragoga phoenicia, Uragoga punicea Scientific Classification Family: Rubiaceae Subfamily: Rubioideae Tribe: Psychotrieae Genus: Psychotria [图片]Flower Color: White Bloom Time: December to March Description Psychotria elata is a tropical tree found in the rain forests of Central and South American countries. The plant has become internet-famous because of its flowers or rather the shape of the red bracts (modified leaves) before the flowers mature. From these bracts tiny white, stare-shaped flowers emerge. Sadly, deforestation is wiping this species off the Earth. [图片]How to Grow and Care Hot Lips grows where the soil is rich and humid from leaf litter, moist and sheltered from the most powerful sun rays by upper story trees. Interior growers turn to plants from around the world to add exotic touches to the home. Hot Lips plant fits the bill but requires a tropical environment. For this reason, it is mostly a collector’s plant for much of the United States. Growing Hot Lips plants requires a heated greenhouse or solarium, high humidity and shelter from harsh solar rays. Growing Hot Lips plant means mimicking the understory tropical environment for which it is suited. Most potting soil will not have both the excellent drainage and moisture retentiveness necessary to raise these plants. Add a bit of vermiculite and peat moss before potting up the plant. Place it in an area with temperatures of at least 70ºF (21ºC), humidity of at least 60% and indirect bright lighting. Origin Native to the rain forests of Central and South American countries like Columbia, Costa Rica, Panama and Ecuador.

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2017年09月29日

Scientific Name Psychotria capensis (Eckl.) Vatke [图片]Common Names Black Bird Berry, Bird Berry, Bastard Lemonwood, Lemon Bush Synonyms Logania capensis (basionym), Grumilea capensis, Grumilea cymosa, Grumilea globosa, Grumilea oblanceolata, Psychotria capensis subsp. capensis, Psychotria capensis var. capensis, Psychotria eckloniana, Psychotria zambesiana, Uragoga capensis, Uragoga zambesiana Scientific Classification Family: Rubiaceae Subfamily: Rubioideae Tribe: Psychotrieae Genus: Psychotria [图片]Flower Color: Golden yellow Bloom Time: Spring to midsummer Description Psychotria capensis is an evergreen shrub or small tree, up to 26 feet (8 m) tall, with a slender stem, horizontal branches and pale brown bark. The leaves are shiny, light to dark green above and paler below, smooth and leathery. They are fairly large, up to 6 inches (15 cm) long, up to 2.4 inches (6 cm) wide, elliptic to obovate, opposite and often drooping. Golden yellow flowers are borne in flattish, terminal, branched heads up to 3.2 inches (8 cm) in diameter from spring to midsummer. The flowers are followed in late summer to winter by large, flat clusters of pea-sized, shiny yellow fruits ripening to red or black. Hardiness USDA hardiness zone 9a to 11b: from 20 °F (−6.7 °C) to 50 °F (+10 °C). [图片]How to Grow and Care Hot Lips grows where the soil is rich and humid from leaf litter, moist and sheltered from the most powerful sun rays by upper story trees. Interior growers turn to plants from around the world to add exotic touches to the home. Hot Lips plant fits the bill but requires a tropical environment. For this reason, it is mostly a collector’s plant for much of the United States. Growing Hot Lips plants requires a heated greenhouse or solarium, high humidity and shelter from harsh solar rays. Growing Hot Lips plant means mimicking the understory tropical environment for which it is suited. Most potting soil will not have both the excellent drainage and moisture retentiveness necessary to raise these plants. Add a bit of vermiculite and peat moss before potting up the plant. Place it in an area with temperatures of at least 70ºF (21ºC), humidity of at least 60% and indirect bright lighting. Origin Native to South African south and east coasts, from Knysna through the Eastern Cape and KwaZulu-Natal.

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2017年09月29日

Scientific Name Protea cynaroides (L.) L. [图片]Common Names King Protea, Giant Protea, Honeypot, King Sugar Bush Synonyms Leucadendron cynaroides (basionym) Scientific Classification Family: Proteaceae Genus: Protea [图片]Flower Color: Creamy white, crimson, and pale pink Bloom Time: Summer to winter Description Protea cynaroides is a woody shrub with thick stems and large dark green, glossy leaves, up to 6.6 feet (2 m) tall. The “flowers” of Protea cynaroides are actually composite flower heads with a collection of flowers in the center, surrounded by large colorful bracts. The flowerheads are up to 12 inches (30 cm) in diameter. The color of the bracts varies from a creamy white to a deep crimson, but the soft pale pink bracts with a silvery sheen are the most prized. [图片]How to Grow and Care Proteas are often seen as temperamental and difficult plants to grow, but the truth is that they are relatively easy as long as you follow a few simple rules. Most Proteas prefer soils that are well-drained and acidic and we suggest to avoid heavy clay soils, as they need good drainage for healthy root growth. If you have a garden with heavy or clay soil, consider improving the drainage by using a free draining garden mix and either creating a raised garden bed (minimum height 12 to 18 inches / 30 to 45 cm) or installing underground drainage pipes. We recommended planting in autumn or spring, allowing the Proteas to absorb as much sun as possible. For best results, allow plenty of space between plants for air to circulate and avoid planting any Proteas deeper than the surface level in the pot. We suggest avoided any use of fertilizer when planting out Proteas, as they have a specially adapted system of fine roots (called ‘proteoid’ roots) which will develop naturally to seek out available nutrients in the soil. Origin Native to the southwestern and southern parts of South Africa.

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2017年09月29日

Scientific Name Protea caffra Meisn. [图片]Common Names Sugar Bush Synonyms Protea caffra subsp. caffra, Protea bolusii, Protea multibracteata, Protea rhodantha Scientific Classification Family: Proteaceae Genus: Protea [图片]Flower Color: Reddish to pink or cream Bloom Time: Summer to winter Description Protea caffra is an evergreen shrub or small tree up to 10 feet (3 m) tall, with a somewhat rounded crown. The grey-green leaves are elongated with nearly parallel sides. They are leathery in texture and may be up to 10 inches (25 cm) long. The flower heads can be borne singly or in clusters. They reach up to 3.2 inches (8 cm) in diameter with the outer bracts varying from reddish to pink or cream in color. Many tiny, single flowers are clustered together in the flower head. When pollinated each flower forms a small nut which is covered in rich reddish brown hairs. The thick bark has a chunky, corky texture. Hardiness USDA hardiness zone 8a to 11b: from 10 °F (−12.2 °C) to 50 °F (+10 °C). [图片]How to Grow and Care Proteas are often seen as temperamental and difficult plants to grow, but the truth is that they are relatively easy as long as you follow a few simple rules. Most Proteas prefer soils that are well-drained and acidic and we suggest to avoid heavy clay soils, as they need good drainage for healthy root growth. If you have a garden with heavy or clay soil, consider improving the drainage by using a free draining garden mix and either creating a raised garden bed (minimum height 12 to 18 inches / 30 to 45 cm) or installing underground drainage pipes. We recommended planting in autumn or spring, allowing the Proteas to absorb as much sun as possible. For best results, allow plenty of space between plants for air to circulate and avoid planting any Proteas deeper than the surface level in the pot. We suggest avoided any use of fertilizer when planting out Proteas, as they have a specially adapted system of fine roots (called ‘proteoid’ roots) which will develop naturally to seek out available nutrients in the soil. Origin Native to South Africa, Lesotho, Zimbabwe and Mozambique.

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